2 #define F_SETFL 4 /* set file->f_flags */
5 #define O_NONBLOCK 00004000
8 #define EINTR 4 /* Interrupted system call */
10 int poll(struct pollfd
*fds
, unsigned long nfds
, int timo
);
11 int socketpair (int af
, int type
, int protocol
, SOCKET socket
[2]);
12 int fcntl(int fd
, int cmd
, long arg
);